(i. About 95.5% percent of the area under the normal curve is within plus three and minus three standard deviations of the mean. (ii) The normal distribution is a continuous probability distribution.
(iii) In a standard normal distribution, µ = 0 and $\sigma$ = 1.
A) (i), (ii), and (iii) are all correct statements.
B) (i) is a correct statement but not (ii) or (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (i) and (ii) are correct statements but not (iii).
E) (ii) and (iii) are correct statements but not (i).

Question

(i. About 95.5% percent of the area under the normal curve is within plus three and minus three standard deviations of the mean. (ii) The normal distribution is a continuous probability distribution.
(iii) In a standard normal distribution, µ = 0 and  $\sigma$ = 1.
A) (i), (ii), and (iii) are all correct statements.
B) (i) is a correct statement but not (ii) or (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (i) and (ii) are correct statements but not (iii).
E) (ii) and (iii) are correct statements but not (i).

Quizplus · Accepted Answer

(i) is incorrect because about 99.7% of the area is within plus and minus three standard deviations. (ii) and (iii) are correct statements.

(I About 95 σ\sigmaσ = 1 A) (I), (Ii), and (Iii) Are All Correct Statements

(I About 95 $\sigma$ = 1
A) (I), (Ii), and (Iii) Are All Correct Statements